<template>
  <view class="cart-container" v-if="cart.length > 0">
    <!-- 收获地址组件 -->
    <my-address></my-address>
    <!-- 购物车商品列表的标题区域 -->
    <view class="cart-title">
      <!-- 左侧的图标 -->
      <uni-icons type="shop" size="22"></uni-icons>
      <!-- 描述文本 -->
      <text class="cart-title-text">购物车</text>
    </view>
     
     <!-- 商品列表区域 -->
     <!-- uni-swipe-action 是最外层包裹性质的容器 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i" >
        <uni-swipe-action-item  :right-options="options" @click="swipeActionClickHandler(goods)" >
          <my-goods :goods="goods" :show-radio="true" @radio-change="radioChangeHandler" :showNum="true" @num-change="numChangeHandler" ></my-goods>
        </uni-swipe-action-item>
      </block>  
    </uni-swipe-action>
    
    <!-- 结算区域 -->
    <my-settle></my-settle>
  </view>

  <!-- 空空如也的显示页面-->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img" ></image>
    <text class="tip-text">空空如也</text>
  </view>
</template>

<script>
  // 导入封装号的mixins模块
  import MixinsBadge from '@/mixins/tabbar-badge.js'
  // 按需导入辅助函数
  import { mapState,mapMutations } from 'vuex'
  export default {
    // 将导入进来的Mixins模块混入当前页面使用
    mixins: [MixinsBadge],
    // 将m_cart 模块的 cart数据映射到此页面中
    computed: {
      ...mapState('m_cart', ['cart']),
    },
    data() {
      return {
        options:[
                {
                    text: '取消',
                    style: {
                        backgroundColor: '#007aff'
                    }
                }, {
                    text: '确认',
                    style: {
                        backgroundColor: '#dd524d'
                    }
                }
              ]
      };
    },
    methods: {
      ...mapMutations('m_cart', ['updataGoodsState', 'updataGoodsCount','removeGoodsById']),
      radioChangeHandler(e) {
        this.updataGoodsState(e)
      },
      numChangeHandler(e) {
        this.updataGoodsCount(e)
      },
      swipeActionClickHandler(e) {
        this.removeGoodsById(e)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }
 .cart-title { 
   height: 40px;
   display: flex;
   align-items: center;
   font-size: 14px;
   padding-left: 5px;
   border-bottom: 1px solid #efefef;
   .cart-title-text {
     margin-left: 10px;
   }
 }
 .empty-cart {
   display: flex;
   flex-direction: column;
   align-items: center;
   padding-top: 150px;
   .empty-img {
     width: 90px;
     height: 90px;
   }
   .tip-text {
     font-size: 12px;
     color: gray;
     margin-top: 15px;
   }
 }
</style>
